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  1. jkampman

    API579/ASM FFS Table F.12 - Fatigue Crack Growth Data for Use With the Bilinear Equation

    Hi danb3, Thanks for the clarification (and the version tip)! Do you know if there is a way to determine where regime B ends and regime C starts?
  2. jkampman

    API579/ASM FFS Table F.12 - Fatigue Crack Growth Data for Use With the Bilinear Equation

    Figure F.8 shows the growth rate curve at Regime C to be steeper than at Regime B. However, the parameters in Table F.12(M) result in a less steep curve for the Upper stage compared to the lower stage. Does anyone understand this?

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